GfsMapProjection

From Gerris

Revision as of 09:29, 12 May 2008 Popinet (Talk | contribs) ← Previous diff		Current revision Popinet (Talk | contribs)
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	lon = 174		lon = 174
	lat = -41		lat = -41
-	scale = 500e3
	angle = 40		angle = 40
-	zscale = 250e3
	}		}
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	;<code>lon</code>: the longitude of the center of the reference GfsBox.		;<code>lon</code>: the longitude of the center of the reference GfsBox.
	;<code>lat</code>: the latitude of the center of the reference GfsBox.		;<code>lat</code>: the latitude of the center of the reference GfsBox.
-	;<code>scale</code>: the reference GfsBox size in metres.
	;<code>angle</code>: an optional rotation angle in the lon-lat plane (default is zero).		;<code>angle</code>: an optional rotation angle in the lon-lat plane (default is zero).
-	;<code>zscale</code>: an optional scaling for the z coordinate (default is <code>scale</code>).	+
		+	<examples/>

---

Current revision

This object remaps the model coordinates using a Lambert conformal conic projection with user-defined parameters. The x-coordinate then becomes the value of the (east positive) longitude in decimal degrees, the y-coordinate becomes the (north positive) latitude in decimal degrees and the z-coordinate becomes the altitude in metres.

The syntax in parameter files is

GfsMapProjection {
  lon = 174
  lat = -41
  angle = 40
}

with

lon

the longitude of the center of the reference GfsBox.

lat

the latitude of the center of the reference GfsBox.

angle

an optional rotation angle in the lon-lat plane (default is zero).

Examples

• Lunar tides in Cook Strait, New Zealand

    MapProjection { lon = 174 lat = -40.8 angle = 40 }